split something down the middle
split (something) down the middle
To divide or share the cost of something exactly equally. While I appreciate the offer and the sentiment, I insist that we split the bill down the middle—I don't like someone paying for me on a first date.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
split something down the ˈmiddledivide people into two groups, who disagree: The local Conservative party is split down the middle on the matter of taxation.
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